Phobio damaged my 2017 MacBook Pro, now what?

On Apple’s website my 2017 MacBook Pro trade in value was quoted at $240. Not great, but probably better than the trouble of listing it myself. So I readied my computer, which was in near-new condition with nothing wrong with it, put it in their shipping box and sent it in.

About 10 days later I get an email from Apple saying their “trades in partner” has revised its offer. Instead of $240, it was now $0.00. The reason for the change was “lcd bleed.” This is outrageous. My MacBook was in perfect shape when I sent it to them. Now, having received my pro back, I turned it on and, low and behold, the screen is now messed up. I can’t even pass the cursor over the distortion to use the thing. They either sent me back an entirely different machine or they basically broke it. Either way I’m left with less than nothing because I can’t even sell it on my own. Having refused the offer I called and complained to Apple customer service. I was instructed to send it back in and they would update my account accordingly. So I did that, and now 10 or so days later I get a “revised quote” of —you guessed it—$0.00. Same reason given.

What is my recourse here? This has to reflect poorly on Apple. It makes me livid, frankly. Am I now stuck in a lousy “their word or mine” dispute?

Scott